Photo: 40-mile single-speed ride, 8:00 a.m., 65 degrees, Linn County, Iowa

Weekly activity log:
Swim: 4,200 yds (ytd 275,400 yds.)
Bike: 82 miles (ytd 4,298 mi.)
Run: 40 miles (ytd 1,302 mi.)

Harvest moon.

Photo: 10-mile run, 7:00 p.m., 80 degrees, Marion, Iowa

Weekly activity log:
Swim: 6,400 yds (ytd 271,200 yds.)
Bike: 100 miles (ytd 4,216 mi.)
Run: 53 miles (ytd 1,262 mi.)

Last gasp of summer.

Photo: post-run, 10:00 p.m., 40 degrees, Decorah, Iowa

Weekly activity log:
Swim: 6,300 yds (ytd 264,800 yds.)
Bike: 67 miles (ytd 4,116 mi.)
Run: 39 miles (ytd 1,209 mi.)

4 spots left.

Photo: 45-miles on the single speed, 7:00 a.m., 60 degrees, Linn County, Iowa

Weekly activity log:
Swim: 4,900 yds (ytd 258,500 yds.)
Bike: 79 miles (ytd 4,049 mi.)
Run: 52 miles (ytd 1,170 mi.)

Gravelicious.

Photo: 1,500-meter swim, 5:00 a.m., 60 degrees, Marion, Iowa

Weekly activity log:
Swim: 5,100 yds (ytd 253,600 yds.)
Bike: 91 miles (ytd 3,970 mi.)
Run: 35 miles (ytd 1,118 mi.)

Last outdoor hurrah of the year.